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Finding the Fourth Proportional to 354,239.01, 531,475.17 and 143,820.45

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Solution

The fourth proportional to 354,239.01, 531,475.17 and 143,820.45 is: 215,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,239.01 : 531,475.17 = 143,820.45 : x
  2. Step 2: Convert to fraction form
    354,239.01/531,475.17 = 143,820.45/x
  3. Step 3: Cross multiply
    354,239.01x = 531,475.17 × 143,820.45
  4. Step 4: Simplify right side
    354,239.01x = 76,436,998,113.23
  5. Step 5: Solve for x
    x = 76,436,998,113.23/354,239.01
  6. Step 6: Final answer
    x = 215,778.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.